{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["else", "location", "organization", "person"], "input": "Naina Yeltsin is recovering in Moscow 's Central Clinical Hospital , where the president himself was treated twice last year for heart attacks ."}
{"else": [], "location": ["Moscow", "Central Clinical Hospital"], "organization": [], "person": ["Naina Yeltsin"]}